Perforated queen-excluder in beehives



May 21, 1935. L. H.'| ARsoN 5 PERFORATED QUEEN 'BX'GLUDYER" IN BEEHIVESFiled Jan. 31, 1935' 7 yen/o2" Patented May 21, 1935 UNITED STATESPATENT OFFICE PERFORATED QUEEN-EXCLUDER IN BEEHIVES Lars Ivar HjalmarLarsson, Snopptorp,

' Eskilstuna, Sweden Application January 31, 1933, Serial No. 654,417 InSweden February 17, 1932 1 Claim.

10 tion sharp burred edges at the side turned from 5 such openings.

. burred edges it is unavoidable, that sharp edges the puncher areunavoidable. The sharp edges are subsequently removed by grinding, asthe worker bees when crawling sharp edged openings will easily be hurt,and the worker bees avoid When grinding off such sharp will remain, evenwith very careful working.

The object of the invention is to remove this inconvenience. Accordingto the invention the a way, that flaps remain at the longitudinal andtransverse sides or at least at the longitudinal sides of the openings.Subsequently said flaps are turned to one side of the sheet andflattened perforation of the openings is carried out in such downclosely to this side, and any harm is excluded. The openings thusproduced will present smooth and round edges.

In the annexed drawing Fig. 1 shows some openings, according to theinvention, having flaps turned to the sheet at the longitudinal sides.

Fig. 2 shows some openings, according to the invention, having flapsturned to the sheet at the longitudinal and transverse sides.

Fig. 3 is a cross-section of an enlarged scale 10 of an openingaccording to the invention.

Referring to the'drawing, l is a part of a queenexcluder, 2 areopenings, produced according to the invention, and 3 are the flaps.

I claim:

15 A queen excluder formed of sheet metal having a plurality of openingsof greater length than width, one or more sides of the openings beingfolded back to provide a flange with curving surface throughout itslength and. width, said 20 flange being in direct contact with theconnecting member between the openings.

LARs IVAR HJALMAR, LARSSON.

